Granted Patent
Utility
US 5,201,440 · App. 07/775,719
Closure with tamper-evident tear-off panel unitary with a flow control element
Inventor:
Richard A. Gross
Patented Case
View Patent ↗
Granted: Apr 13, 1993
Filed: Oct 11, 1991
Inventor
Richard A. Gross
Assignee (at issue)
Seaquist Closures, a division of Pittway Corp.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.